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18.Move the transaxle assembly to the rear and out of
the unit frame.
19.With the transaxle assembly removed from the unit
frame, place the axle assembly on a flat work
surface.
6.4 HYDRO TRANSMISSION REPAIR
(MINOR)
Minor repairs may be performed, following the
procedures in this section.
Cleanliness is a primary means of assuring satisfactory
life of either new or repaired units. Cleaning parts by
using solvent wash and air drying is usually adequate.
As with any precision equipment, all parts must be kept
free of foreign materials and chemicals.
Protect all exposed sealing surfaces and open cavities
from damage and foreign material. The outer surfaces
of the transaxle should be cleaned before beginning
any repairs.
Shaft Seals
Lip type seals are used on the pump input shaft, the
displacement control shaft and bypass actuator shaft of
the transaxle. These seals can be replaced without
major disassembly of the unit. Replacement of these
seals will require removal of the transaxle from the
machine frame.
1. To remove the input shaft seal carefully pull the
seal out of the housing bore with a "hook" type tool
or a slide hammer type puller. Care must be taken
to avoid damage to the housing bore or to the shaft
sealing surface.
2. Lubricate the new seal prior to installation with a
petroleum jelly.
3. Wrap the shaft spline with a thin plastic or
cellophane tape to prevent damage to the new seal
lip during installation.
4. Slide the seal over the shaft and press it into the
housing bore. Be careful not damage the seal. The
seal should seat against the retaining ring.
The displacement control shaft seal and bypass
actuator shaft seal may be replaced following similar
procedures.
Figure 27
Figure 28
936-35
Figure 29
936-35